CVE-2024-11831: Npm-serialize-javascript: cross-site scripting (xss) in serialize-javascript
A flaw was found in npm-serialize-javascript. The vulnerability occurs because the serialize-javascript module does not properly sanitize certain inputs, such as regex or other JavaScript object types, allowing an attacker to inject malicious code. This code could be executed when deserialized by a web browser, causing Cross-site scripting (XSS) attacks. This issue is critical in environments where serialized data is sent to web clients, potentially compromising the security of the website or web application using this package.
Security readout for executives and security teams
Plain-English summary
CVE-2024-11831 is an XSS weakness in serialize-javascript 6.0. If attacker-controlled data is serialized into content delivered to a browser, malicious JavaScript may execute in a user's session, potentially exposing data or enabling actions as that user.
Executive priority
Treat this as a targeted, moderate-priority remediation. Accelerate action for internet-facing or privileged interfaces that serialize user-controlled data into browser content. Broader emergency response is not supported because active exploitation is unconfirmed and availability impact is not expected.
Technical view
The module insufficiently sanitizes certain inputs, including regular expressions and other JavaScript object types. When affected serialized output reaches a browser, injected code may execute. CVSS 3.1 is 5.4: network-accessible, low complexity, low privileges, user interaction required, changed scope, and limited confidentiality and integrity impact.
Likely exposure
Prioritize applications using serialize-javascript 6.0 that place serialized, attacker-influenced objects into browser responses. The bundle also identifies specific builds across Red Hat Advanced Cluster Security, Ceph Storage, RHEL, and OpenShift Data Foundation; confirm exposure through exact package and build inventories.
Exploitation context
The supplied record does not identify active exploitation, and the CVE is not listed as KEV. Exploitation requires attacker-controlled input to reach vulnerable serialization and a user to process the resulting content in a browser. Public exploit availability is not established by the provided sources.
Researcher notes
The record maps this CVE to numerous Red Hat product builds, but the supplied material does not explain every dependency path or provide an upstream fixed version. Validate reachability, not merely package presence. Preserve the distinction between a bundled affected component and an exploitable browser-facing data flow.
Mitigation direction
Inventory serialize-javascript 6.0 and the exact Red Hat product builds identified in the record.
Check current package and Red Hat guidance for supported fixes; the bundle does not specify a fixed upstream version.
Apply applicable vendor updates or errata after testing affected applications and platforms.
Until remediated, prevent untrusted object data from entering JavaScript serialized into browser responses.
Validation and detection
Inspect direct and transitive dependencies for serialize-javascript 6.0.
Match installed Red Hat package versions against the affected builds and applicable errata.
Trace whether attacker-controlled regular expressions or objects reach browser-delivered serialization.
After remediation, confirm vulnerable versions are absent and review rendered responses for unsafe serialized input.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
cwe · medium confidence lookup
CWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
The affected technology mentions containers, so container-specific ATT&CK technique review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE-79 · source CWE mapping
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.